وقَالَ وَأَخْبَرَنِي عَطَائٌ أَنَّ ابْنَ عَبَّاسٍ أَرْسَلَ إِلَی ابْنِ الزُّبَيْرِ فِي أَوَّلِ مَا بُويِعَ لَهُ إِنَّهُ لَمْ يَکُنْ يُؤَذَّنُ بِالصَّلَاةِ يَوْمَ الْفِطْرِ إِنَّمَا الْخُطْبَةُ بَعْدَ الصَّلَاةِ
صحیح بخاری · Hadith 959
Ata told me that during the early days of Ibn Az-Zubair, Ibn `Abbas had sent a message to him telling him that the Adhan for the `Id Prayer was never pronounced (in the life time of Allah's Apostle) and the Khutba used to be delivered after the prayer.
Sanad
959 - قَالَ: وَأَخْبَرَنِي عَطَاءٌ،